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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>黑马面面</title>
    <link rel="stylesheet" href="./css/normalize.css">
    <link rel="stylesheet" href="./css/index.css">
</head>
<body>
    <!-- 头部区域 -->
    <header class="header">黑马面面</header>
    <!-- 导航栏部分 -->
    <nav class="nav">
        <a href="#">1</a>
        <a href="#">2</a>
        <a href="#">3</a>
        <a href="#">4</a>
        <a href="#">5</a>
        <a href="#">6</a>
    </nav>

   <script src="./js/flexible.js"></script>
</body>
</html>